helmsman: change owner and move to finalAttrs (#438588)

pkgs/by-name/he/helmsman/package.nix

@@ -4,14 +4,14 @@
   fetchFromGitHub,
 }:
 
-buildGoModule rec {
+buildGoModule (finalAttrs: {
   pname = "helmsman";
   version = "4.0.1";
 
   src = fetchFromGitHub {
-    owner = "Praqma";
+    owner = "mkubaczyk";
     repo = "helmsman";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     sha256 = "sha256-As0YjqMdPCgIzYWB1Wf3R11mwj6CglWZdvCRzlHDvkw=";
   };
 
@@ -31,4 +31,4 @@ buildGoModule rec {
       sarcasticadmin
     ];
   };
-}
+})